Omron C200HW-CORT21, Руководство по эксплуатации

Страница: 54 / 62

Maintenance
Section 5-3
52
Message communication problems (continued)
No user defined
CAN messages are
received. The identifier filter was not indicated or was
incorrect. Check the values of the identifier filter (word n
~ word n+2 of the IOWR message structure)
and execute an IOWR instruction that
indicates the identifier filter.
An incorrect PLC start address in the IOWR
message structure was indicated. Check the PLC start address (word n+3 in the
IOWR message structure).
The network cabling is not correct. Check if the correct pins of the bus connector
are connected (see section 2-1-5), if there are
no short circuits, if the stub-lines are not too
long, and if the network is terminated at the
appropriate places (see section 2-3).
The Unit operates on a different baud rate than
the other node on the network. Configure all the units on the network to the
same baud rate.
Not all user defined
CAN messages are
received The C200HW-CORT21 is only able to buffer 15
messages. If the receive buffer is not read
before the buffer overflows, messages are
being lost. Reduce the PLC scan time or change to a
lower baud rate (receive buffer is filled at a
lower rate).
ERR LED is
switched ON. An application error was detected. IR n+3.14 is
set. Restart the Unit. If this does not help, replace
the Unit.
7-segment display
value is Blinking. The 7-segment display indicates the cause.
Refer to section
3-3
for a list with error codes.
Try to solve the cause and/or restart the Unit.
If this does not help, replace the Unit.
5-3 Maintenance
This section describes the routine cleaning and inspection recommended as
regular maintenance.
5-3-1 Cleaning
Clean the CAN Units regularly as described below in order to keep it in
optimal operating condition.
•
Wipe the Unit with a dry, soft cloth for regular cleaning.
•
When a spot cannot be removed with a dry cloth, dampen the cloth with a
neutral cleanser, wring out the cloth, and wipe the Unit.
•
A smudge may remain on the Unit from gum, vinyl, or tape that was left
on for a long time. Remove the smudge when cleaning.
Never use volatile solvents such as paint thinner or benzene or chemical
wipes. These substances could damage the surface of the Unit.
5-3-2 Inspection
Be sure to inspect the system periodically to keep it in its optimal operating
condition. In general, inspect the system once every 6 to 12 months, but
inspect more frequently if the system is used with high temperature or
humidity or under dirty / dusty conditions.
Inspection Equipment Prepare the following equipment before inspecting the system.
Required Equipment
Have a standard and Philips-head screwdriver, multimeter, alcohol, and a
clean cloth.
!
Caution